Abstract: An example hydraulic tool includes: a fluid reservoir; a pump; an electric motor; a cylinder; a piston; a first trigger button; a second trigger button; and a controller configured to perform operations comprising: receiving a first signal when the first trigger button is triggered, responsively, causing the electric motor to rotate in a first rotational direction, thereby: (i) causing the pump to provide fluid to the cylinder, and (ii) causing the piston to move in a first linear direction, thereafter, receiving a second signal when the second trigger button is triggered, and responsively to the second signal, causing the electric motor to rotate in a second rotational direction opposite the first rotational direction, thereby: (i) opening a fluid path from the cylinder to the fluid reservoir, and (ii) causing the piston to move in a second linear direction opposite the first linear direction.

Abstract: An access port for minimally invasive surgery includes an elongate, tubular main body portion, a slot extending over a length of the main body portion in a lengthwise direction, and a flap which covers the slot in a closed configuration, while exposing the slot when in an open configuration. The slot extends through a wall of the main body portion, from an outside surface of the main body portion to an inside surface of the main body portion.